SHADOW SYSTEMS MR920 Foundation | 9mm 4″ 10rd | SS-1334

The SHADOW SYSTEMS MR920 Foundation Slide is a compact, optics-ready 9mm pistol built for controllability and modular ergonomics. It features a Foundation-style slide and an optic cut with a black frame and black slide finish. The MR920 is designed to accept standard Gen 4 G19 magazines and to fit common holsters and equipment configured for that footprint. For a sighting solution under $1,000, the Holosun 507C X2 is a practical match that maintains sight height compatibility and provides robust electronic sighting at a reputable price point.

Common applications for this pistol include everyday carry (EDC) and precision range training or target shooting.

Product Specifications

• The manufacturer is SHADOW SYSTEMS.
• The model is MR920.
• The manufacturer’s part number is SS-1334.
• The caliber is 9mm.
• The barrel measures 4 inches.
• The magazine capacity is 10 rounds.
• The frame finish/color is black.
• The slide is a Foundation Slide and is optic-ready.
• The guide rod is black carbon steel.
• The sights are steel white-dot style.
• The trigger is a polymer flat face with an advertised pull around 4–4.5 lb.
• The package includes two 10-round magazines.
• The kit includes three backstraps and a backstrap tool.
• The overall length is 7.25 inches and the height is 4.75 inches.
• The UPC is 810013439250.

The MR920 balances compact dimensions with a feature set aimed at shooters who want a modern, optic-ready platform that integrates easily with common 9mm accessories. Its configurable grip, aggressive ergonomics, and standard G19-compatible magazine interface make it well suited for daily carry setups and disciplined range work where controllability and sighting options matter.

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